20df8b282a
Instead of hard-coding values in multiple files, all default values are declared in `IamfDecoder`. Additionally, the max number of frames used for output buffer initialisation is fetched from `libiamf` native functions. PiperOrigin-RevId: 658772175
99 lines
3.3 KiB
C++
99 lines
3.3 KiB
C++
/*
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* Copyright 2024 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef __ANDROID__
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#include <android/log.h>
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#endif
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#include <jni.h>
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#include <cstdint>
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#include <cstdlib>
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#include "IAMF_decoder.h"
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#include "IAMF_defines.h"
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#ifdef __ANDROID__
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#define LOG_TAG "iamf_jni"
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#define LOGE(...) \
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((void)__android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__))
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#else // __ANDROID__
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#define LOGE(...) \
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do { \
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} while (0)
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#endif // __ANDROID__
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#define DECODER_FUNC(RETURN_TYPE, NAME, ...) \
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extern "C" { \
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JNIEXPORT RETURN_TYPE Java_androidx_media3_decoder_iamf_IamfDecoder_##NAME( \
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JNIEnv* env, jobject thiz, ##__VA_ARGS__); \
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} \
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JNIEXPORT RETURN_TYPE Java_androidx_media3_decoder_iamf_IamfDecoder_##NAME( \
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JNIEnv* env, jobject thiz, ##__VA_ARGS__)
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jint JNI_OnLoad(JavaVM* vm, void* reserved) {
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JNIEnv* env;
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if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
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return -1;
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}
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return JNI_VERSION_1_6;
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}
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DECODER_FUNC(jint, iamfLayoutBinauralChannelsCount) {
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return IAMF_layout_binaural_channels_count();
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}
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IAMF_DecoderHandle handle;
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DECODER_FUNC(jint, iamfConfigDecoder, jbyteArray initializationDataArray,
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jint bitDepth, jint sampleRate, jint channelCount) {
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handle = IAMF_decoder_open();
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IAMF_decoder_peak_limiter_enable(handle, 0);
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IAMF_decoder_set_bit_depth(handle, bitDepth);
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IAMF_decoder_set_sampling_rate(handle, sampleRate);
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if (channelCount == 2) {
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IAMF_decoder_output_layout_set_binaural(handle);
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} else {
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IAMF_decoder_output_layout_set_sound_system(handle, SOUND_SYSTEM_INVALID);
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}
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uint32_t* bytes_read = nullptr;
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jbyte* initializationDataBytes =
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env->GetByteArrayElements(initializationDataArray, 0);
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int status = IAMF_decoder_configure(
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handle, reinterpret_cast<uint8_t*>(initializationDataBytes),
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env->GetArrayLength(initializationDataArray), bytes_read);
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env->ReleaseByteArrayElements(initializationDataArray,
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initializationDataBytes, 0);
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return status;
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}
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DECODER_FUNC(jint, iamfDecode, jobject inputBuffer, jint inputSize,
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jobject outputBuffer) {
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uint32_t* rsize = nullptr;
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return IAMF_decoder_decode(
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handle,
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reinterpret_cast<const uint8_t*>(
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env->GetDirectBufferAddress(inputBuffer)),
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inputSize, rsize,
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reinterpret_cast<void*>(env->GetDirectBufferAddress(outputBuffer)));
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}
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DECODER_FUNC(jint, iamfGetMaxFrameSize) {
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return IAMF_decoder_get_stream_info(handle)->max_frame_size;
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}
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DECODER_FUNC(void, iamfClose) { IAMF_decoder_close(handle); }
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